Patent US3395525A successfully refreshed from Google Patents.
US3395525A
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Method and apparatus for frictionally fibrillating films
Assignee: Phillips Petroleum Co
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Filing: 1967-01-13
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Granted: 1968-08-06
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Expires: 1987-01-13
Abstract
No abstract record available.
Inventors
- 👤 William R Eddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:05
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10S57/00; Y10S57/907; Y10T; Y10T225/00; Y10T225/10; Y10T225/14; Y10T225/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2185789A
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US2545869A
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US2707805A
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US2700657A
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US2930535A
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US3165563A
Cited
US3199284A
Cited
US3202501A
Cited
US3177557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |